package edu.zzuli;

/**
 * Created by Chen-D.W on 2017/12/30.
 */
public class Test {

        public void  printStr(  String str)
        {
            str =str+"!";
            System.out.println(str);
        }
        public static void main(String args[])
        {
            Test  test=new Test();
            test.printStr("Hello world");
        }
    }
